., has issued a message of condolence to president obama. there's been a national security meeting. the white house says previously scheduled. but there was a gathering of all the top officials around 11:15 this morning. our google hangout plus with secretary kerry was postponed at the last minute today for obvious reasons. secretary kerry is leaving for istanbul for a meeting with president erdogan as he continues with his mission to try to sort out policy and the way forward, in syria, and then going to a nato meeting in brussels. there's a lot of balls in the air right now but principally we have a law enforcement challenge on our hands and it is being from all accounts, it is being handled brilliantly by massachusetts, boston and local, state and local police, all coordinating through governor patrick and other law enforcement officials the massachusetts emergency management team, the federal authorities, and all of course reporting to and coordinated by the fbi. this is the system that was put in place after the worst tragedy america endured, 9/11. after that, we had hearings,